doc: correct ordering of go1.5 minor revisions

Fixes #13474

Change-Id: Ic86e54f6bc67db46504f7d43a0666647af308177
Reviewed-on: https://go-review.googlesource.com/17404Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-on: https://go-review.googlesource.com/17406Reviewed-by: Chris Broadfoot <cbro@golang.org>

doc/devel/release.html

@@ -21,14 +21,6 @@ Read the <a href="/doc/go1.5">Go 1.5 Release Notes</a> for more information.
 
 <h3 id="go1.5.minor">Minor revisions</h3>
 
-<p>
-go1.5.2 (released 2015/12/02) includes bug fixes to the compiler, linker, and
-the <code>mime/multipart</code>, <code>net</code>, and <code>runtime</code>
-packages.
-See the <a href="https://github.com/golang/go/issues?q=milestone%3AGo1.5.2">Go
-1.5.2 milestone</a> on our issue tracker for details.
-</p>
-
 <p>
 go1.5.1 (released 2015/09/08) includes bug fixes to the compiler, assembler, and
 the <code>fmt</code>, <code>net/textproto</code>, <code>net/http</code>, and
@@ -37,6 +29,14 @@ See the <a href="https://github.com/golang/go/issues?q=milestone%3AGo1.5.1">Go
 1.5.1 milestone</a> on our issue tracker for details.
 </p>
 
+<p>
+go1.5.2 (released 2015/12/02) includes bug fixes to the compiler, linker, and
+the <code>mime/multipart</code>, <code>net</code>, and <code>runtime</code>
+packages.
+See the <a href="https://github.com/golang/go/issues?q=milestone%3AGo1.5.2">Go
+1.5.2 milestone</a> on our issue tracker for details.
+</p>
+
 <h2 id="go1.4">go1.4 (released 2014/12/10)</h2>
 
 <p>